#include "bisectwindow.h"
#include "ui_bisectwindow.h"

#include "mainwindow.h"
#include "framefileio.h"
#include "helpwindow.h"

#include <QDebug>
#include <algorithm>

BisectWindow::BisectWindow(const QVector<CANFrame> *frames, QWidget *parent) :
    QDialog(parent),
    ui(new Ui::BisectWindow)
{
    ui->setupUi(this);
    setWindowFlags(Qt::Window);

    modelFrames = frames;

    connect(MainWindow::getReference(), SIGNAL(framesUpdated(int)), this, SLOT(updatedFrames(int)));
    connect(ui->btnCalculate, &QAbstractButton::clicked, this, &BisectWindow::handleCalculateButton);
    connect(ui->btnReplaceFrames, &QAbstractButton::clicked, this, &BisectWindow::handleReplaceButton);
    connect(ui->btnSaveFrames, &QAbstractButton::clicked, this, &BisectWindow::handleSaveButton);
    connect(ui->slideFrameNumber, &QSlider::sliderReleased, this, &BisectWindow::updateFrameNumText);
    connect(ui->slidePercentage, &QSlider::sliderReleased, this, &BisectWindow::updatePercentText);
    connect(ui->editFrameNumber, &QLineEdit::editingFinished, this, &BisectWindow::updateFrameNumSlider);
    connect(ui->editPercentage, &QLineEdit::editingFinished, this, &BisectWindow::updatePercentSlider);
    installEventFilter(this);
}

BisectWindow::~BisectWindow()
{
    removeEventFilter(this);
    delete ui;
}

void BisectWindow::showEvent(QShowEvent* event)
{
    QDialog::showEvent(event);
    refreshIDList();
    refreshFrameNumbers();
    updateFrameNumText();
    updatePercentText();
}

bool BisectWindow::eventFilter(QObject *obj, QEvent *event)
{
    if (event->type() == QEvent::KeyRelease) {
        QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
        switch (keyEvent->key())
        {
        case Qt::Key_F1:
            HelpWindow::getRef()->showHelp("bisector.html");
            break;
        }
        return true;
    } else {
        // standard event processing
        return QObject::eventFilter(obj, event);
    }
    return false;
}

void BisectWindow::refreshIDList()
{
    int id;
    foundID.clear();
    ui->cbIDLower->clear();
    ui->cbIDUpper->clear();
    for (int i = 0; i < modelFrames->count(); i++)
    {
        id = modelFrames->at(i).frameId();
        if (!foundID.contains(id))
        {
            foundID.append(id);
        }
    }

    std::sort(foundID.begin(), foundID.end());

    foreach (int id, foundID) {
        ui->cbIDLower->addItem(Utility::formatCANID(id));
        ui->cbIDUpper->addItem(Utility::formatCANID(id));
    }
}

void BisectWindow::refreshFrameNumbers()
{
    ui->labelMainListNum->setText(QString::number(modelFrames->count()));
    ui->labelSplitNum->setText(QString::number(splitFrames.count()));
    ui->slideFrameNumber->setMaximum(modelFrames->count());
}

void BisectWindow::updatedFrames(int numFrames)
{
    if (numFrames == -1) //all frames deleted
    {
        refreshFrameNumbers();
    }
    else if (numFrames == -2) //all new set of frames. Reset
    {
        refreshFrameNumbers();
        refreshIDList();
    }
    else //just got some new frames. See if they are relevant.
    {

    }
}

void BisectWindow::handleCalculateButton()
{
    splitFrames.clear();
    bool saveLower = ui->rbLowerSection->isChecked();
    int targetFrameNum;
    if (ui->rbFrameNumber->isChecked() || ui->rbPercentage->isChecked())
    {
        if (ui->rbFrameNumber->isChecked()) targetFrameNum = ui->slideFrameNumber->value();
        else targetFrameNum = modelFrames->count() * ui->slidePercentage->value() / 10000;
        if (saveLower)
        {
            for (int i = 0; i < targetFrameNum; i++) splitFrames.append(modelFrames->at(i));
        }
        else
        {
            for (int i = targetFrameNum; i < modelFrames->count(); i++) splitFrames.append(modelFrames->at(i));
        }
    }
    else if (ui->rbIDRange->isChecked())
    {
        uint32_t lowerID = Utility::ParseStringToNum2(ui->cbIDLower->currentText());
        uint32_t upperID = Utility::ParseStringToNum2(ui->cbIDUpper->currentText());
        for (int i = 0; i < modelFrames->count(); i++)
        {
            if (modelFrames->at(i).frameId() >= lowerID && modelFrames->at(i).frameId() <= upperID) splitFrames.append(modelFrames->at(i));
        }
    }
    refreshFrameNumbers();
}

void BisectWindow::handleReplaceButton()
{
    CANFrameModel *model;
    model = MainWindow::getReference()->getCANFrameModel();
    model->clearFrames();
    model->insertFrames(splitFrames);
    refreshFrameNumbers();
    refreshIDList();
}

void BisectWindow::handleSaveButton()
{
    QMessageBox msg;
    QString filename;
    if (FrameFileIO::saveFrameFile(filename, &splitFrames))
    {
        msg.setText(tr("Successfully saved file"));
    }
    else
    {
        msg.setText(tr("Error while attempting to save."));
    }
    msg.exec();
}

void BisectWindow::updateFrameNumSlider()
{
    ui->slideFrameNumber->setValue(ui->editFrameNumber->text().toInt());
}

void BisectWindow::updatePercentSlider()
{
    ui->slidePercentage->setValue(ui->editPercentage->text().toFloat() * 100);
}

void BisectWindow::updateFrameNumText()
{
    ui->editFrameNumber->setText(QString::number(ui->slideFrameNumber->value()));
}

void BisectWindow::updatePercentText()
{
    ui->editPercentage->setText(QString::number(ui->slidePercentage->value() / 100.0f));
}
